Pump-head



S. M. FULTON.

PUMP HEAD.

APPLxcATfoN FILED Auen. 1920: y l

Patented June 21, 1921.

-2 SHEETS-snif l.

INVENTOR. www

S. M. FULTON.

l PUMP HEAD. APPLICAUON FILED AUG-1, 1920.

ATTORNEY UNITED STATES SAMUEL M. FULTON, OF POMONA, CALIFORNIA.

PUlVIF-HEAD.

Specification of Letters Patent.

Patented June 21, 1921.

Original application i1ed January 14, 1920, Serial No. 351,480. Dividedand this application led.

August 7, 1920. serial No. 401,838.

To all whom t may concern Be it known that I, SAMUEL M. FULTON, acitizen of the United States, residing at Pomona, in the county of LosAngeles, State of California, have invented a new and useful Pump-Head,of which the following is a specification.

This invention relates to pump heads, and particularly t0 a mechanismfor imparting a variable driving motion to a plurality of plungers tosecure a continuous flow, such each stroke is secured-that is, oneplunger will start upward and takethe load prior to the completion ofthe downwardstroke of the other plunger, whereby the column of water iskept in motion and the hammer or jar due to stopping and starting of thecolumn of water entirely obviated.

A further object of the invention is to improve the detailsofconstructioii of the driving 'mechanism and the connection therefromto the plunger rods.

Figure 1 is a front elevation'of the pump head, some of the parts beingin section, and the wellpit, well casing and'discharge pipe being shownin section. Y f w Fig. 2 is a top plan view.

Fig. 3 is a side elevation. V

Fig. 4 is a detailed side elevation of one of the walking beams.

Fig. 5 is a detailed vertical section through the cross `head and pumprods.

Fig. 6 isa detail elevation of the crank shaft.

I In the drawings 1 designates a foundation preferably formed ofconcreteand provided with a rectangular well pit -2. Embedded in theconcrete foundation with the upper sur faces lying flush with the uppersurface of said foundation I provide opposed horizon- Vtal' tracks, eachformed of parallel I beams 3, 4 separated to form longitudinalintermediate slots 5. beams 3, 4 are held in spaced relation by spacingblocks 6 which are maintained in position by transverse bolts'7, 8extending through alined orifices in the beams and in the blocks. Theframe which supports the operating mechanism comprises two opposed sideframes 9, 10 longitudinally slidable upon the I beam tracks or sills andmaintained in spaced relation by` a tie bar or yoke 11 secured to theupper Vforward ends of the side frames. The frame is secured in adJustedposition upon the tracks by bolts 12 and nuts 13. i

The main drive shaft 16 is journaled in the bearings 17, 18 in the rearportions of the side frames 9, 10 and has fixed to one end, beyond theside frame 10, a belt wheel 19 which is driven by aV motor 20 through abelt 21.` A belt tightening device such as is indicated at 22 may beemployed if desired. bearings 24, 25 in the forward portions of the sideframe 9, 10 and has fixed` to one end, beyond the side frame 9, a gearwheel 26 which meshes with a gearpinion 27 fixed to the main shaft 16.(See Fig. 2.) The crank shaft is formed with crank arms 28,' 29 adjacenteach side frame and connected by crank pins 30, 31 respectively, tocrank disks 32, 33, the disks also being connected by a central crankpinV 34. (See Fig. 6.) The crank disks rest upon relatively alinedrollers 35, 36 Awhich arecarried by a shaft 37.` Said shaft is journaledin .bearing blocks 38-38 carried by the side frames. This structureprovides a support at the medial portion of the crank shaft .tol relievethe crank shaft bearings of the major portion of the load of the workingstrokes of the pump.

Y Journaled in bearings 40-41 at thek rear portions of the side framesis a beam shaft 42' on which are journaled Vthree walking beams43-44-45, each having a bearing seat 46 engaging the shaft and securedin position by coperating bearing caps 47.

(See Fig. 4.) As the three walking beams are of duplicate construction,a description of one of them will herein su'Hice., Each beam comprises askeleton frame forming parallel slide ways 50-51, in which slides acrank pin block 52, hereinafter described in detail, the slide block ofeach beam respectively coperating with its companion A crank shaft 23 isjournaled in (see Figs. i, e.) TheV crank-pin of the crank shaft. Thebeam frame is also provided with an orifice 5 3 providing clearance fornon-interference with the main drive shaft 16 which projects Y throughsaid orifice and the forward end of vsaid frame has a pivoted bearing 54for connection with the pump. The construction ofV the crank pin slideblock (see Fig. 4) comprises a lower half-bearing 55 engaging the lowerslide way 51 of the walking beam,

and having laterally extended earsV 56-56. Anupper .half-bearing 57 isalso provided with laterally extended ears 58-58, the twohalf-bearingsbeing secured together on the coperating Acrank pin of thecrank shaft, by bolts 59-159 engaging through alined orices in the earsof both halt bearings and themselves engaged by clamp nuts 60,-60.

The vertical guide rod is detachably clamped in the outer medial portionof the tie yoke `11 and is' secured in any desired manner at its lowerend, for instance, by being screw-threaded into the' flange 76 of thewell-head, as shown in Figs. 1 3. The flange 76 is angularly disposedrelative to the rod 75 and is secured to the well-head 77 by bolts`78,the well casing and tube being attached to said head in any suitablemanner with the tube communicating with the discharge pipe 79. Thisconstruction of wellhead provides a discharge having a gradual `bendfree from sharp turns as would retard the ilow.

LinksSO-Sl are pivotally connected at 54 to the center walking beam 44Cand to a guide head 82 secured to the upper end of an inner pump rod 83which extends downwardly in telescopic engagement within an outertubular pump rod 84. The .guide head 82 has `a split bearing 85 slidablyengaging the lguide rod 75.. and'by which the pump rod 83 is guided inits reciprocating movements.

The two outer walking beams 43-45 are respectively connected by links86*87 to opposite sides Volf a cross-head 88 which is secured to the topof the tubular 'pump rod 784CY (see Fig. 1) a suitable packing beingprovided between the cross-head and inner pump rod 83, as indicated at89.

In operation, the drive shaft 16 being driven at a uniform rate of speedrotates the crank shaft 23' through the medium of the gear pinion 27yand gear wheel 26, the crank tioned crank pins raise or lower theirrespective walking beams are indicated by ydotted lines awb on Fig. 3and as these positions are relatively angularly disposed, it followsthat, when one pump rod reaches the end of a stroke the other pumprodhas already started some distance on the next stroke, therebyproducing a strokeV lap in the' operation otthe pump rods, which insuresa continuous pumping operation. A

The invention herein described provides a pump head mechanism which as aunit may be readily moved from its normal position over the well pit toa position which will Y afford freev access Vto said pit, also bypositioning the entire operating mechanism between the two side framesthe widthr of the pump connections extending into the pit is reducedtoaminimum so that the supporb ing beams may be closely positionedtogether to afford sturdy compact structure especially adaptable toryuse in wells in which it is undesirable or impossible'to provide wellpits of largedimensions. The' provision of the supporting rollers forcarryingthe weight ot the crank shaft insures long lite to the crankshaft bearings and guards against any distortion'of'the shaft. Theindependent lubricating devices combine eil'ectively with the oildistributingr slide box plates to ya perfect lubrication of the slideways of each walking beam.

I claim: Y

1. In apumn-head,parallel walkinn'beams` a crankshaft havineropposedcrankparms, intermediate crank disks and crank pins connecting theadjacent arms and disks, and slideblocks engaging the crank pinsl andwalking beams. i

2. In a pump-head, parallel walking beams having longitudinal slidewavs,crank shaft having opposite crank arms, intermediate crank disksandcrank pins connecting the adiacent-arms and disks, and slide blocksiournaled on the crank pins and slidable in the slideways.

3. In a pump-head, opposed side frames, pivotedparallel walking beamspositioned between said trames, a crank shafthaving crank arms adiacenteach side frame* crank 115 disks between the crank arms and crank pinsconnectingthe adjacent arms and disks, and means operatively connectingthe crankpins with the walking beams.

4. In a pumphead, opposedside frames, 120 pivoted parallel walking beamspositioned betweensaid frames and having longitudinal slideways, a crankshaft having crank arms adjacent each side frame, crankdisks between thecrank arms and crank pins con- 125 necting the arms and disks, and slideblocks journaled on the crank pins and slidable in the slideways. y y

5. In a pump-head, a single crank shaft having opposedk crank arms,intermediate 130 crank disks, and-crank pins connecting the beam and theother to the outer beams, and 10 adjacent arms and disks, three Walkingmeans for driving the crank shaft.

beams pivoted on a common axis, the cen- Signed at Pomona, Calif., this28th day tral beam being operatively connected with of July, 1920. thecrank pin connecting the crank disks and the outer beams beingoperatively connected with the crank pins connecting the respec-Witnesses: tive crank arms With the adjacent disks, GRACE M. MATTHYS,pump rods, one connected With the center HELEN OBRIEN.

SAMUEL M. FULTON.

